Electronic delivery systems and methods with feedback

• US 20060089751A1
• Filed: 06/14/2005
• Published: 04/27/2006
• Est. Priority Date: 01/27/1997
• Status: Abandoned Application

• Current Assignee: Innovations Holdings, LLC
• Original Assignee: Innovations Holdings, LLC
• Inventors: Herbst, Ewa
• Application Number:
  US11/151,967
• Publication Number:
  US 20060089751A1
• Time in Patent Office: Days
• US Class Current: 700/265
• CPC Class Codes: A61N 1/0412 Specially adapted for transcutaneous electroporation, e.g. including drug reservoirs
• CPC Class Codes: A61N 1/0464 Specially adapted for promoting tissue growth
• CPC Class Codes: A61N 1/0468 Specially adapted for promoting wound healing
• CPC Class Codes: A61N 1/306 Arrangements where at least part of the apparatus is introduced into the body
• CPC Class Codes: A61N 1/32 alternating or intermittent currents applying electric fields by inductive or capacitive coupling A61N1/40; microwave apparatus A61N5/02
• CPC Class Codes: A61N 1/325 for iontophoresis, i.e. transfer of media in ionic state by an electromotoric force into the body electrodes for external use A61N1/0428
• CPC Class Codes: A61N 1/327 for enhancing the absorption properties of tissue, e.g. by electroporation
• CPC Class Codes: A61N 1/3605 Implantable neurostimulators for stimulating central or peripheral nerve system

Abstract

In accordance with some embodiments of the present invention, delivery systems and methods for delivering a substance in a medium is provided. The delivery system may include a delivery component, an electronic controller, one or more sensors, and a feedback mechanism. The delivery component has at least one reservoir that contains a substance (e.g., a liquid, a drug, etc.). The electronic controller is connected to the delivery component and controls the release of the substance from the at least one reservoir into the medium. The sensors monitor one or more parameters in the medium and provide a signal to a feedback mechanism. The feedback mechanism, in response to the signal, sends an electrical signal that directs the controller to release the substance from the reservoir into the medium, thereby maintaining a desire level of a monitored parameter (e.g., pH, pO₂, temperature, pressure, ions, volume, impedance, dosage, etc.).

Claims

1. A system for delivering a substance in a medium, the system comprising:

a delivery component that includes at least one reservoir, wherein the at least one reservoir contains the substance;

an electronic controller that is connected to the delivery component and that controls the release of the substance from the at least one reservoir into the medium; and

a sensing mechanism that monitors at least one parameter in the medium and that provides a signal to a feedback mechanism, wherein the feedback mechanism sends an electrical control signal to the controller to effect the release of the substance from the at least one reservoir into the medium.

2. The system of claim 1, wherein the electronic controller further comprises:

at least one signal generator for generating a plurality of signals, wherein each signal has a controllable waveform based on at least one electrical parameter, and wherein the at least one electrical parameter includes any of;

amplitude, frequency, shape, timing parameters, phase, pulse duration, and pulse repetition rate;

a selection mechanism for selecting as output signals one or more of the plurality of generated signals; and

at least one output terminal, wherein the electronic controller is configured to place at least one of the output signals on the at least one output terminal and wherein the output signals control the release of the substance from the at least one reservoir.

3. The system of claim 1, wherein the sensing mechanism comprises any of sensing electrodes, pickup coils, temperature sensitive devices, magnetic probes, biosensors, and biomarkers.

4. The system of claim 1, wherein the electronic controller is further configured to compare the monitored parameter to a desired value for the at least one parameter.

5. The system of claim 4, wherein the desired value is one of an upper limit and a lower limit for the monitored parameter.

6. The system of claim 1, wherein the system is one of an electronic component, an integrated circuit, a multi-chip module, a hybrid circuit, a system-on-chip (SoC), a system-in-package (SiP), and a lab-on-a-chip.

7. The system of claim 1, wherein the controller is further configured to send an electrical control signal that effects the release of a given volume of the substance from the at least one reservoir.

8. The system of claim 1, wherein the controller is further configured to send an electrical control signal that effects the release of the substance from the at least one reservoir for a given time sequence.

9. The system of claim 1, wherein, in response to the sensing mechanism detecting that the concentration of the substance in the at least one reservoir is greater than a desired value, the electronic controller is configured to send an electrical control signal that effects the release of another substance into the at least one reservoir that dilutes the substance.

10. The system of claim 1, wherein, in response to the sensing mechanism detecting that the dosage of the substance in the at least one reservoir is greater than a desired value, the electronic controller is configured to send an electrical control signal that effects the amount of the substance that is released from the at least one reservoir.

11. The system of claim 1, wherein the at least one parameter comprises any of pH, pO₂, volume, pressure, temperature, ion, dosage, time, impedance, and biomarker activity.

12. The system of claim 1, wherein the system is a drug delivery system.

13. A system for delivering substances in a medium, the system comprising:

a delivery component that includes a plurality of reservoirs, wherein each of the plurality of reservoirs contains a substance;

a controller that is connected to the delivery component, wherein the controller comprises;

at least one signal generator for generating a plurality of signals, wherein each signal has a controllable waveform based on at least one electrical parameter, and wherein the at least one electrical parameter includes any of;

amplitude, frequency, shape, timing parameters, phase, pulse duration, and pulse repetition rate;

a selection mechanism for selecting as output signals one or more of the plurality of generated signals; and

a plurality of output terminals, wherein the controller is configured to place at least one of the output signals on each of the output terminals and wherein the output signals control the release of the substance from the plurality of reservoirs;

a sensing mechanism that monitors at least one parameter in the medium; and

a feedback mechanism that directs the controller to effect the release of at least one of the substances from the plurality of reservoirs into the medium based at least in part on the monitored parameter.

14. The system of claim 13, wherein the controllable waveform comprises pulses.

15. The system of claim 13, wherein the at least one parameter comprises any of pH, pO₂, volume, pressure, temperature, ion, dosage, time, impedance, and biomarker activity.

16. The system of claim 13, wherein the controller further comprises a combining mechanism for combining two or more generated signals to provide the output signal.

17. The system of claim 13, wherein the sensing mechanism comprises any of sensing electrodes, pickup coils, temperature sensitive devices, magnetic probes, biosensors, and biomarkers.

18. The system of claim 13, wherein the system is one of an electronic component, an integrated circuit, a multi-chip module, a hybrid circuit, a system-on-chip (SoC), a system-in-package (SiP), and a lab-on-a-chip.

19. The system of claim 13, wherein the plurality of signals are identical and wherein the controller is further configured to place each of the plurality of identical signals on each of the plurality of output terminals.

20. The system of claim 19, wherein the controller is capable of synchronizing the plurality of identical signals.

21. The system of claim 13, wherein the controller is arranged to independently place each of the signals on the output terminals such that each signal on each of the output terminals is independent from signals on each of the other output terminals.

22. The system of claim 21, wherein the controller is capable of synchronizing the plurality of independent signals.

23. The system of claim 13, wherein the controller is arranged to independently place each of the signals on the output terminals such that at least one of the signals on an output terminal is independent from another signal on another output terminal.

24. The system of claim 23, wherein the controller is capable of synchronizing the at least one signal and the another signal.

25. The system of claim 13, wherein the substance in one of the reservoirs is identical to the substance in each of the other reservoirs.

26. The system of claim 13, wherein the substance in one of the reservoirs is different from the substance in each of the other reservoirs.

27. The system of claim 13, wherein the substance in one of the reservoirs is different from the substance in another reservoir.

28. The system of claim 13, wherein the controller is further configured to send an electrical control signal that effects the release of a given volume of the substance from one of the plurality of reservoirs.

29. The system of claim 13, wherein the controller is further configured to:

send a first electrical control signal that effects the release of a first volume of a first substance from one of the reservoirs; and

send a second electrical control signal that effects the releases of a second volume of a second substance from another reservoir, wherein the first electrical signal and the second electrical signal are synchronized and wherein the first substance and the second substance are mixed.

30. The system of claim 13, wherein the controller is further configured to send an electrical control signal that effects the release of the substance from one of the plurality of reservoirs for a given amount of time.

31. The system of claim 13, wherein, in response to the sensing mechanism detecting that the concentration of the substance in at least one reservoir of the plurality of reservoirs is greater than a desired value, the controller is further configured to send an electrical control signal that effects the release of another substance into the reservoir that dilutes the substance for a given time sequence.

32. The system of claim 13, wherein, in response to the sensing mechanism detecting that the dosage of the substance in at least one reservoir of the plurality of reservoirs is greater than a desired value, the controller is further configured to send an electrical control signal that changes the amount of the substance that is released from the at least one reservoir.

33. A method for delivering a substance in a medium, the method comprising:

receiving a signal from at least one sensor, wherein the at least one sensor monitors at least one parameter in the medium; and

in response to receiving the signal from the at least one sensor, transmitting an electrical control signal from the at least one sensor to a controller to effect the release of the substance from at least one reservoir into the medium

34. A method for delivering substances in a medium, the method comprising:

providing a plurality of reservoirs;

generating a plurality of signals, wherein each signal has a controllable waveform based on at least one electrical parameter, and wherein the at least one electrical parameter includes any of;

amplitude, frequency, shape, timing parameters, phase, pulse duration, and pulse repetition rate;

selecting one or more of the plurality of generated signals for use as output signals;

providing multiple output terminals, wherein at least one of the multiple output signals is placed on each output terminals and wherein the output signals control the release of substances from the plurality of reservoirs;

monitoring at least one parameter in the medium;

directing a controller that is connected to the plurality of reservoirs to effect the release of at least one of the substances from the plurality of reservoirs into the medium based at least in part on the monitored parameter.